Frame for log-skidders.



PATENTED JULY 21, 1968.

J. R. MGGFFERT. FRAME FOR LUG SKIDDERS APPLlGATIoN FILED 1320.30. 1904.

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.A1 5.1 no 9 oo nw N UNITED STATES PATENT OFFICE.

.'TOHN R. MCGIFFERT, OF DULUTH, MINNESOTA, ASSIGNOR TO CLYDE IRON WORKS, OF

DULUTH, MINNESOTA, A

CORPORATION OF MINNESOTA.

FRAME FOR LOG-SKIDDERS.

Specification of Letters Patent.

Patented .Tuly 21, 1908.

Application filed December 30, 1904. Serial No. 238,981.

To all whom it may concern.'

Be it known that I, JOHN R. MOGIFFERT, a citizen of the United States, resident of Duluth, county of St. Louis, State of Minnesota, have invented a new and useful Improvement in Frames for Log-Skidders,v of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle so as to distinguish it from other inventions.

My invention relates to frames for the bodies of cars and particularly cars for use in skidding logs.

The object of my said invention is to provide a construction for such car-frame which will allow the same to `be constructed substantially entirely of commercial or structural steel, and permit such structure to be economical in construction as well as strong and durable.

Said invention consists of means hereinafter fully described and particularly set forth in the claims.

The annexed drawings and the following description set forth in detail certain means embodying the invention, such disclosed means constituting but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawings Figure l represents a plan of the car-body embodying my invention, portions thereof being shown as broken away to disclose the construction beneath. Fig. 2 represents a side elevation of said body mounted upon suitable trucks. Fig. 3 represents a vertical section, upon a slightly enlarged scale, of a portion of said car-body and one of the trucks, said section being taken upon the plane indicated by the line 3 3 in Fig. l. Fig. 4 represents a vertical transverse section, upon said enlarged scale, of the car-body, said section being taken upon the plane indicated by the line 4 4, Fig. 1.

Fig. 5 represents a similar view taken upon the plane indicated by the line 5 5, Fig. l.

I of the frame open.

and resting upon their consists of a plurality of I-beams whose lower surfaces are caused to be Hush with the lower surfaces of the main side beams or sills A, as shown in Fig. 3. These I-beams extend between the said sills and are secured to the inner surface of the latter by means of suitable angle-plates. The said bolsters are, as shown, of less depth than are the said sills, up er surfaces are longitudinal intermediate sills, A, A@ whose extremities are suitably attached to the end plates a, a. The upper surfaces of these intermediate sills lie in the same horizontal plane with the upper surfaces of the main side sills A, A, as shown in Figs. 4 and 5.

Secured transversely of the frame immediately above the bolsters B respectively, are two transverse plates, C C suitably riveted to the tops of longitudinal sills A and A". Two tension bars D, D, Figs. 3 and 4, have their respective ends secured to the lower portions of the two side sills A, suitable holes being drilled through the latter and washers a, a provided to make suitable fastenings therefor. These bars pass upwardly through the transverse plates C, as shown, and over the intermediate sills A. In this manner the sides of the frame are partly supported by the intermediate sills A, so that a portion of the load carried by the frame may be transferred through this medium to said intermediate sills. Suitable cover-plates E, E, extend between the two transverse plates C, C, and are secured to the side sills and intermediate sills respectively, as shown, leaving the central portion Upon opposite sides of the central vertical transverse plane ofthe frame and exten ding between the two intermediate sills A are two cross-braces a2, a2 whose ends rest against the sides of the intermediate sills A. Extending from the middle of each of these cross-braces a2 and connecting the latter with the middle or adjacent end plate a is a longitudinal beam A3, as shown in Fig. l, the upper surface of the latter and the crossbrace connected therewith being in the plane of the upper surface of the sills A,A, as shown in Fig. 4. Suitable braces a3, a3 are provided for strengthening this part of the structure.

adjacent end plate a are two bers F, F, forming a housing for the drawbar mechanism of the car. These members f, and a suitable aperture,

-of the. ends of the longitudinal sills A, A, as

shown in Fig. l. When it is desired to utilize the above described construction so as to render the car automobile, suitable bearings II, H are provided, as shown in Fig. 3, for carrying shafts H2 and countershafts h, as shown in Fig. l. Suitable a ertures c, c are provided in the coverates E, E, for permitting the assage vtherethrough of a suitable driving c ain, as will be readily understood.

v Other modes of applying the principle of my invention maybe employed instead of the one explained, change being made as regards the means herein disclosed, provided the means stated by any one of the following claims or the equivalent of such stated means be employed.

- I therefore particularly point out anddistinctly claim as my invent1on:-

1. In a frame for a log-skidding car, the combination of-outer longitudinal sills of uniform depth throughout, intermediate longitudinal sills of less depth than said outer sills and supporting said intermediate sills.

2. In a frame for a log-skiddingcar, the combination of two outer longitudinal sills, two intermediate longitudinal sills of a less depth than said outer sills, said four sills having their upper surfaces in .the same plane, means for cross-bracing said sills, and bolsters joining said outer sills and lying beneath said intermediate sills.

3. In a framefor a log-slridding car, the combination of two outer longitudinal sills, two intermediate longitudinal sills of a less depth than said outer sills, said four sills having their upper surfaces inthe same plane,

- sills, and bolsters located between said outer i` means for cross-bracing said sills, and two -bolsters supporting said intermediate sills,

said bolsters each comprising a plurality of transverse beams and being located between salild outer sills and under said intermediate si s.

4. In a frame for a log-slridding car, the combination of two outer longitudinal sills, two intermediate longitudinal sills of a less depth than said outer sills, said four sills having their upper surfaces in the same plane, means for cross-bracing said sills, and 1 two bolsters, located at opposite ends of said frame respectively and comprising a plurality of transverse beams, such bolsters lying under said intermediate sills and between said outer sills and being of such a de th as to cause their lower surfaces to be su stantially in the same plane with the bottom surfaces of said side sills.

5. In a frame for a log-skidding car, the combination of two outer longitudinal sills, two intermediate longitudinal sills of less depth than said outer sills, said four sills having their upper surfaces in the same plane, means for cross-bracing said sills, and two bolsters comprising a plurality of transverse beams and located between said outer sills, and under said intermediate sills.

6.In a frame for a log-skidding car, the combination of outer longitudinal sills of uniform depth throughout, intermediate longitudinal sills of less depth than said outer sills and having their upper surfacesr in a lane with the upper surfaces vof said outer sills, and bolsters located between said outer sills and under said intermediate sills.

7. In a frame for a log-slidding car, the combination of outer longitudinal sills of uniform depth throughout, intermediate longitudinal sills of less depth than said outer sills and having their upper' surfaces in a plane with the upper surfaces of said outer sills, means for cross-bracing-said sills, and bolsters joining said outer sills and lying beneath said intermediate sills.

8. In a frame for a log-skidding car, the combination of two outer longitudinal sills, two intermediate sills parallel with said outer sills and of less depth throughout than the latter, said four sills having their upper surfaces in the same p lane, means for crossbracing said sills, two bolsters supporting the intermediate sills and located at opposite ends of said frame respectively and consisting of a plurality of transversebeams, said bolsters being located between and having theirI ends secured to said side sills, and being of a depth suchas to cause their lower surfaces to be substantially in the same plane with the bottom surfaces of said side sills.

9. In a frame for a log-skidding machine, the combination of two outer longitudinal sills, two intermediate sills parallel with and of less depth than the latter', two bolsters at opposite ends of the frame, secured to the inside of said outer sills and supporting said intermediate sills, end plates secured to said sills, two transverse members connecting said intermediate sills, two longitudinal beams respectively connecting each of said members and the nearest end plate, said members having their lower surfaces resting upon said bolsters respectively.

' 10. In a frame for a log-skidding machine, the combination of two side sills, two bolsters having their ends secured respectively to the inside of said sills, two intermediate sills parallel with said side sills and supported by said bolsters, end plates connecting said sills,

two transverse members connecting said intermediate sills, two longitudinal beams connecting the said transverse members and the adjacent end plates respectively, said beams resting upon and supported by said bolsters, and two longitudinal beams connecting each bolster and the adjacent end plate.

11. ln a frame for a log-skidding car, the combination of a bolster comprising a plui'ality of transverse beams, outer longitudinal sills connected therewith, intermediate longi tudinal sills supported thereby, and a tension bar disposed between each two adjacent,

beams in said bolster, suoli tension bar having its central portion resting upon said intermediate sills aiid its ends secured to the lower j portion of said outer sills respectively.

12. In a frame for a log-skidding machine,

the combination of two side sills, two bolsters having their ends respectively secured to the inside of said sills and having their upper surfaces below the plane of the surface of said sills, two intermediate sills parallel with said side sills, and tension bars in the vertical plane of said bolsters, said bars having their ends secured at the lower portion of said side sills and passing upwardly over said interinediate sills.

13. In a frame for a log-skidding car, the combination of outer longitudinal sills; intermediate longitudinal sills, plates connecting the ends of said sills, transverse members joining said intermediate sills, and longitudinal beams connecting said transverse members with the adjacent end-plates.

111. ln a frame for a log-skidding car, the combination of outer longitudinal sills, bolsters having their ends secured respectively to the inside of said outer sills intermediate longitudinal sills supported upon said bolsters; plates connecting the ends 'of said outer and intermediate sills, two transverse members joining' said intermediate sills intermediately of their ends, and longitudinal beams connecting said transverse members with the adjacent end plates, lsuch beams being also supported upon said bolsters.

15` the combination of two side sills, two bolsters having their ends respectively secured to the inside of said sills and having their upper surfaces below the plane of the surface of said sills, two intermediate sills parallel with said side sills, end plates connecting said sills, two transverse members connecting' said intermediate sills, two longitudinal beams connecting said transverse members and the adjacent end plates respectively, said beams resting upon and supported by said bolsters respectively, two longitudinal beams connecting each bolster and the adjacent end plate, and tension bars in the vertical plane of said bolsters, said bars having their ends secured at the lower portion of said side In a frame for a log-skidding machine,

sills, and two longitudinal beams connecting' each bolster and the adjacent eiid-plate.

17. In a frame for a log-skidding car, the combination of outer longitudinal sills of uniform depth throughout, intermediate longitudinal sills of less depth than said outer sills, plates connecting the adjoining ends of said outer and intermediate sills, bolsters connecting said outer sills and lying beneath said intermediate sills, and two parallellongitudinal beams connecting each bolster and the adjacent end-plate to form a draw-bar housing.

18. In a frame for a log-skidding car, the combination of two outer longitudinal sills, two intermediate longitudinal sills having their upper surfaces in a plane with the upper surfaces of said outer sills, bolsters connecting said outer sills and supporting said intermediate sills, end-plates connecting the ends of said outer and intermediate sills, and longitudinal cover plates connecting adjoining outer and intermediate sills.

19. In a frame for a log-skidding car, the combination of two outer longitudinal sills, two intermediate longitudinal sills having their upper surfaces in a plane with the upper surfaces of said outer sills, bolsters connecting said outer sills and supporting said intermediate sills, end-plates connecting the ends of said outer and intermediate sills, longitudinal coverplates connecting adjoining outer and intermediate sills, and transverse cover-plates over said bolsters.

20. In a frame for a log-skidding car, the combination of two outer longitudinal sills, two intermediate longitudinal sills having their upper surfaces in a plane with the upper surfaces of said outer sills, bolsters connecting said outer sills and supporting said intermediate sills, end-plates connecting the ends of said outer and intermediate sills,` longitudinal'cover-plates connecting adjoining outer and intermediate sills, transverse cover-plates over said bolsters, and tension bars having their ends secured respectively to said outer j sills and passing through said transverse cover plates to bind the latter to said intermediate sills.

Signed by me this 10th day of December,

JOHN R. MCGIFFERT.

l/Vitnesses:

ARTHUR W. HUNTER, N. M. NELSON. 

